A medical device is provided that includes a vessel-engaging member attached to a distal end of a delivery wire. The semiconductor package contains both the radio receiver and the GPS receiver. The suspension devices are selectably removable from the array in order to define a space within the sheet which approximates the size of a target area on the body of the user. A method for regulating bandwidth usage by data sources in a node in a downhole network along a downhole tool string is also disclosed.